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Benefit Plans And Obligations For Termination Indemnity (Asset Category) (Details)	Dec. 31, 2011	Dec. 31, 2010
Benefit Plans And Obligations For Termination Indemnity [Abstract]
Equity Securities	56.80%	58.10%
Debt Securities	36.10%	33.60%
Other	7.10%	8.30%
Total	100.00%	100.00%

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The percentage of the fair value of debt securities to the fair value of total plan assets held as of the measurement date.

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The percentage of the fair value of equity securities to the fair value of total plan assets held as of the measurement date.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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The percentage of the fair value of investments other than debt securities, equity securities, and real estate to the fair value of total plan assets held as of the measurement date.

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-Publisher FASB

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The aggregate percentage of the fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of total plan assets held as of the measurement date.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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